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# ExtAudioFileOpen

Deprecated. Use the [`ExtAudioFileOpenURL(_:_:)`](/documentation/AudioToolbox/ExtAudioFileOpenURL(_:_:)) function instead.

```
extern OSStatus ExtAudioFileOpen(const struct FSRef *inFSRef, ExtAudioFileRef*outExtAudioFile);
```

## Parameters

`inFSRef`

The audio file to read.

`outExtAudioFile`

On exit, a newly allocated ExtAudioAudioFileRef.

## Return Value

A result code.

## Discussion

Allocates a new ExtAudioFileRef for reading an existing audio file.

### Special Considerations

This function is deprecated. Use the [`ExtAudioFileOpenURL(_:_:)`](/documentation/AudioToolbox/ExtAudioFileOpenURL(_:_:)) function instead.

---

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